Means for supporting the free ends of projecting elements of metalworking machines



July 7, 1925. 1,545,215

a. n. SUNDSTRAND MEANS FOR SUPPORTING THE FREE ENDS OF PROJECTING ELEMENTS OF METAL WORKQENG MACHINES Filed Dec. 15 1920 Patented July-7, 1925. v

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QApinicat onmea' December 15,1920; FSerial- No: 430,914.

ToaZZ whom it may concern." s 'Be'itkn'own that'I, Grrs'rAr D VID SUNDV- STRAND, a -citizen of the United States, residing at Rockford, in' the county of Winnebago'and Stateiof Illinois, have m vented certain new and useful Improvements in Means for Supporting the" Free Ends of Projecting Elements of Metal- Working Machines, ofwhich the following isafispejcifi'cation. 1 My invention relates to metal work ng machinery and morefspecifically to'an improvement in themean's for providing an outboard support for rotary spindles" or arbors projectingfrom the bodles of such m'achines. I I j Oneobjec't ot my invention is to provide mean's'for readily displacing such an outboard supportto permit of the removal of the cutteror piece of' v vork mounted on the spindle orarbor. i Anotherobject is to provide means for permitting this motion by Withdrawing the arbor support longitudinally from the arbor 2 without requiring the-i arbor support to be movedprecisely to any predetermined point.

Another object is-to'provide for easy replacementof the outboard support in operative position regardless or slight inaccuracies in the alinementot the parts.

I Ano her objectis to materially increase the rigidity with which the arborsupport may "be clampedin position While the machine is in operation. Further objects and advantages of -my invention will become apparent as the'description proceeds. I

' In'the accompanying drawings, Fig. 1 is a side view ofa Well known type of mill- 4 ing machine illustrating the application of my invention thereto. Fig,2 is a fragmentaryend viewaof the parts shown in: Fig. i 1.: Fig. 3 is an end-viewof a slightly modi- -fiedform, and Fig. 4" is an endview'of 'still another modification. i

In'the embodiment of my invention selected for-illustration, my improved 'supporting means is illustrated in connection with a milling machine having a column 10,

a knee 12, saddle 14 and table 16 mounted in the Well known manner." v The arbor or spindle 20 projects past the Work table and placeby'me'ans of bolts 24..

must be supported at its'outer end during the'cutting operation. According-to my inventiomya main, arm

22 projects: from I the; column; in --par"allel spaced relation with 'the arbor .20; ,This,

main arm may be cast-integral vvith-ethe column 10, but I prefer 'to, makejitof a separate piece and-fasten it permanently in at 27- andicarrying an arbor support 28permanently associated-therewith to .formi 'a rigid unit. In the form "shown in Fig; 2

the main arm 22 is in partsubstantially rectangular in cross section, which part has T-slots3O in itsflo wer face'receivingsthe I "A eylindrical arm 26 alsoi 'eXtends p aral- :lel to the arbor; 20 "being slidablfy-mounted in the column 10in any. suitable Tv'vay', as," for,

instance, bymeans of any elongated-bearing 565 arbor support-form a single rigidunit to firmly support and gu'idethe rotating'end of the arbor. Upon loosening the bolts 32 the'cylinolrical arm and arbor support may be readily slid away from'the column-to carry the boltsout of the -T-sl'ots' and the arbor support'pas't the end ofthe main arm,

T after which the cylindrical armand arbor support may be readily rotated around the I axis of the cylindrical arm-to carry the bearing 36 of the arbor" support laterally away from the axisof thearbor and permit ready removal otthe cutter orpiece of ork carried thereby. 1 1

It Will be apparent thatf'the' main arm may be madeas heavy asdesired to provide the necessary"rigidity,'andthat after loosening the i bolts the Workman can pull" the cylindrical arm and "arbor support toward him Without'taking pains to arrest their motion at any definite point, leavingthemfree' tobe pushed out of the 'wayas the cutter or piece of Work is removed'from the arbor."

, In'Fig. 3 I have illustrated an'alternative 7 construction in which the cylindrical arm f 26 is partly housed by the main arm 38, the

construction being in every other respect identical with that sh wn in Fig-'20 In large manufacturing. establishments using a considerable number-of machines of this type with cutters or work blanks of skilled in the art.

- nevertheless various sizes,the largest size of cutter or blank is used only at relatively rare intervals. It will be apparent that the type of construction herein disclosed permits of a ;design according to Fig. 3in which a cutter having a diameter indicated by the dot and dash line may be employed; and that by a slight change inthe crosss'ection of the main arm 38 and the positioning of the portions 34 ofthe arbor support, a much more rigid construction such as that illustrated in Fig. 4 maybe provided for some of the machines without changing any other partsexcept the main arm and arbor support-.JIn this figure it will be noted that the sides of the main arm 44 have been carried downward to provide a deep "U- shaped cross section of great rigidity,'w1thout limiting the operative capacity'of the machinein anywayeXcept that it limits the size ofcutter which may be used to that indicated on Figs. 2, 3 and 4 by the line 46.

1 It should be noted that the bolts 32 -may and ordinarily should be a rather loose lit :in the slots. Arms 22, 38 and 44-, however, 'ep rovide plane surfaces against which the according tomy'invention may be applied to any machine tool having a pro ecting rotor element, whether the element rotates I around a horizontal or vertical axis and whether it carries a cutter or a piece of work. Many variations and modifications of my invention-will naturally occur to those I aim in the subjoined claims to cover all legitimate modifications and variations of my invention.

I claim as my invention:

. 1., In a machine tool, a bodyyan element projecting from the body and acting to primarily receive the force exerted bythe cutting tool, a cylindrical arm projecting from said body, an outboard support rigidly associated with said cylindrical arm, said cylindrical arm being axially slidable and rotatable with respect to the body, and a rigid arm projecting from the body having a non-cylindrical cross section and operating when the outboard support is in operative position as a base to which the outboard support may be clamped for rigidly bracing the same against motion of any sort. H

support to the other. arm.

6. A milling machine having, in combina- 7 2. In a machine tool, the combination with a bodyand .an arbor, of two arms projecting from said body, one of said arms being a permanently and rigidly associated with said body, an outboard support associated 7 with the other of said arms, and adjustable means for clamping said outboard support to the first arm withthe aXesof the arbor and arms coplanar.

3. In a machine tool, the combination with a bodyand an arbor, of two arms projecting from said body, one of said arms having vertical sides between the planes of which the other arm is disposed, said .first arm being rigidly associated with said body,=an

outboard support associated with the second arm, and adjustable means for clamping the outboard support to the first arm. 4. In a machine tool, in combination, a

body, two arms projecting from said body,

one arm being circular and the other being non-circular, an outboard support associated with the circular arm, and means including headed bolts engaging in T-slots for clamp- 5. In a machine tool, a body, two armsv projecting from said-body, one arm being disposed in the space under the other arm, an. outboard supportassociated with one of :ing the supportto. the non-circular arm.

said' arms, and means for clamping said tion, a column, a main arm overlyingthe upper end of the column and secured thereto and projecting forwardly from the column, said arm having aplane lower face, a horizontal cylindrical arm mounted in the column below the ,main arm for pivotal and sliding movement, an arbor support rigidly secured to the forward 195 end of the cylindrical arm, said arbor support-having a plane upper end, means-- for clampingthe upper endof said arbor support to the lower face of the main arm,

and an arbor located in the vertical plane of the axis of the cylindrical arm, the outer endof said arbor being carried. by said arbor support. v 1 7. In a machine tool, a body, two parallel board support associated with one arm, and means for clamping said support to the other arm to hold it rigidly and accurately in a linement, said means comprising elements arms projecting from said body, an outengaging said outboard support and said arm-for clamping said support against the surface of said arm. a

8'. A milling machine having, in combination, a column, a main arm overlying the upper end of the column and secured-thereto andprojecting forwardlyfrom the column,

said arm havinga plane lower face, a horizontal cylindrical arm slidably mounted in j the column below the main arm, an arbor support mounted on the forward end of the 1 I mounted in the column below the main arm,"

cylindrical arm, said arbor support having a plane upper end, means for clampingthe upper end of said arbor support to the lower face of the main'arm, and an arbor the outer end of which is carried by said arbor support. 7

9. A milling machine having, in combina-- tion, a column, a main arm secured to the upper end of the column and projecting forwardly therefrom, said arm having a plane lowerface, a horizontal arm slidably an arbor support mounted on the forward end of the slidable arm, said arbor support having a plane upper end, means for clamping the upper end of said arbor support to the lower face of the main arm, and an arbor, the outer end of which is carried by said arbor support.

10. In a machine tool, a body, a cylin-' the body, an outboard support associated with the other arm whereby the support is slidable with respect to the body in a line parallel to the first arm, the first arm having planar portions thereon, and the support having planar portions thereon adapted to abut the planar portions of the first arm, and clamping means between the first arm and the support whereby the planar portions are rigidly held together.

12. In a machine tool, a body, a cylindrical arm and a second arm projecting from the body in parallel spaced relationthereto, the second arm having substantially vertical sides terminating-in a substantially horizontal plane, an outboard support permanently associated with said cylindrical arm and having planar portions normally abutting the non-cylindrical arm at the end of said arbor aforesaidvplanar portions, and means for clamping the outboard support to the noncylindrical arm.

13. A'milling machine having, incombination, a column, a main arm overlying the upper endof thecolumn secured there.

to and projecting forwardly from the column, said arm having a plane lower face, a horizontal cylindrical'arm mounted in the column in the space under the main arm for pivotal and sliding movement, an arbor supthe cylindricalarm, said arbor support havinga "plane surface at its upper end, means port rigidly secured .to the forward end ofv forl clamping the upper end of said arbor support to the plane face of the main arm, J"

and any arbor located in the vertical plane.

of the axis of the cylindrical arm,the outer being carried by said support.

. 14. A milling machine having, in combination, a column, a main arm'overlying the upper end, of the column and secured thereto and projecting forwardly on the-column, said arm having a plane lower face, a horizontal cylindrical arm slidably mounted in-the column in the space under the vmain arm, an arbor support mountedon the forward end of the cylindrical arm, said arbor support having a planeface at its so i upper end, means for clamping said plane face of the arbor support" to the plane face of the main arm, and an arbor the outer end I of which is carried by said arbor support.

15; A milling machine having, in combination, a column, a main arm secured to the upper end of the column and projecting forwardly therefrom, said arm having a plane lower face, a'horizontal arm slidably mounted in the column in the space under the main arm, an arbor support mounted on V the forward end of the slidable arm, said arbor support having a plane face on its upper end, means for clamping the plane face of the arbor and support to the plane face of the main arm, and an arbor, the

outer -'end of which is carried by said Q support. a

In testimony whereof, I have hereunto set my hand.

GUST'AF DAVID SUNDSTRAND. 

